本题目来源于试卷: Physics Unit32: Elementary Particles，类别为 通用国际物理
[单选题]
The Feynman diagram shows 7*gr l4iv84a tfjvc)ff3z 4juthe weak inte 8jg s :bx8r:yeraction of a neutrino ($\nu$) and a neutron ($n$), mediated by a $W+$ particle. The interaction produces an electron ($e-$) and another particle. What is the other particle?
A. a positron ($e+$)
B. a pion ($\pi+$)
C. a proton ($p$)
D. a quark
E. an anti-neutron
参考答案: C
本题详细解析:
暂无
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